Celtic's manager Neil Lennon lifts the trophy following their Scottish Cup Final win in May 2013Celtic Manager Neil Lennon poses with the trophy following the Scottish Premiership match at Celtic Park, GlasgowCeltic manager Neil Lennon addresses his players during a training session before their Champions League group H soccer match against AjaxCeltic manager Neil Lennon during a press conference at Celtic Park, Glasgow today.Neil Lennon and his Celtic squad celebrate James Forrest's injury-time goal which sealed a place in the lucrative group stages of the Champions League in 2013Liverpool manager Brendan Rodgers, right, and Celtic boss Neil Lennon outside the Mansion House in Dublin ahead of the Dublin Decider match in August 2013Celtic Manager Neil Lennon poses with the Scottish Premier League trophy following the Clydesdale Bank Scottish Premier League match between Celtic and St Johnstone at Celtic ParkCeltic's manager Neil Lennon comes out to speak to the fans fifteen minutes after his side's victory over Inverness Caledonian ThistleCeltic manager Neil Lennon during the Scottish Cup Fourth Round Replay match at Gayfield Park, Arbroath in 2012Celtic manager Neil Lennon puts his hands on his head during the UEFA Champions League, Group G match between SL Benfica and Celtic FC at Estadio da Luz on November 20, 2012 in Lisbon, Portugal. (Photo by Julian Finney/Getty Images)Celtic manager Neil Lennon gestures towards his players during the Clydesdale Bank Scottish Premier League match at McDiarmid Park in 2012Celtic manager Neil Lennon during the William Hill Scottish Cup, Semi Final at Hampden Park, Glasgow in April 2012Celtic's Neil Lennon argues with the Referee Euan Norris during the William Hill Scottish Cup, Semi Final at Hampden Park, Glasgow in April 2012Celtic manager Neil Lennon with Victor Wanyama at full time after losing during the Scottish Communities League Cup Final at Hampden Park, Glasgow, in March 2012Celtic boss Neil Lennon gestures towards the Rangers supporters despite the increased tensions between the clubs in 2011A man was arrested in 2011 after an attempted attack on Celtic manager Neil LennonCeltic manager Neil Lennon shouts to his players from the Hampden Park stand. Photo: ReutersNeil Lennon can't bear to look as time runs out for Celtic against Ross County in the Scottish Cup semi-final at Hampden Park in 2010. Photo: PACeltic Manager Neil Lennon directs during a training session at the Juventus Stadium, Turin. Picture: Nick Potts/PA Wire.